|  | /* | 
|  | *  Copyright 2017 The WebRTC project authors. All Rights Reserved. | 
|  | * | 
|  | *  Use of this source code is governed by a BSD-style license | 
|  | *  that can be found in the LICENSE file in the root of the source | 
|  | *  tree. An additional intellectual property rights grant can be found | 
|  | *  in the file PATENTS.  All contributing project authors may | 
|  | *  be found in the AUTHORS file in the root of the source tree. | 
|  | */ | 
|  |  | 
|  | #ifndef API_RTC_EVENT_LOG_RTC_EVENT_LOG_FACTORY_INTERFACE_H_ | 
|  | #define API_RTC_EVENT_LOG_RTC_EVENT_LOG_FACTORY_INTERFACE_H_ | 
|  |  | 
|  | #include <memory> | 
|  |  | 
|  | #include "absl/base/nullability.h" | 
|  | #include "api/environment/environment.h" | 
|  | #include "api/rtc_event_log/rtc_event_log.h" | 
|  |  | 
|  | namespace webrtc { | 
|  |  | 
|  | // This interface exists to allow webrtc to be optionally built without | 
|  | // RtcEventLog support. A PeerConnectionFactory is constructed with an | 
|  | // RtcEventLogFactoryInterface, which may or may not be null. | 
|  | class RtcEventLogFactoryInterface { | 
|  | public: | 
|  | virtual ~RtcEventLogFactoryInterface() = default; | 
|  |  | 
|  | virtual absl_nonnull std::unique_ptr<RtcEventLog> Create( | 
|  | const Environment& env) const = 0; | 
|  | }; | 
|  |  | 
|  | }  // namespace webrtc | 
|  |  | 
|  | #endif  // API_RTC_EVENT_LOG_RTC_EVENT_LOG_FACTORY_INTERFACE_H_ |